public static int CountRun(string filename)
{
TSStreamReader tsReader = new TSStreamReader(filename);
long cuid;
int num = 0;
while (!tsReader.EOF())
{
num++;
cuid = tsReader.LookAhead().m_nThiSinhID;
while ((cuid <= tsReader.LookAhead().m_nThiSinhID) && (!tsReader.EOF()))
{
cuid = tsReader.DisposeCurrentTS().m_nThiSinhID;
//Console.WriteLine("{0}", cuid);
}
//Console.WriteLine("Het run!");
}
Console.WriteLine("Tap tin {0} co {1} run", filename, num);
return(num);
}
public static int kwayMergeSort(string[] str)
{
int numrun = 0;
bool state = true;
TSStreamReader[] fread = new TSStreamReader[2];
StreamWriter[] fwrite = new StreamWriter[2];
int k = 0;
int numfile = 2;
long cuid;
string[] s = new string[4];
do
{
numrun = 0;
if (state)
{
s[0] = str[0];
s[1] = str[1];
s[2] = str[2];
s[3] = str[3];
}
else
{
s[0] = str[2];
s[1] = str[3];
s[2] = str[0];
s[3] = str[1];
}
state = !state;
for (int i = 0; i < 4; i++)
{
if (FileIsLocked(s[i]))
{
Console.WriteLine("{0} is blocked !");
}
}
fread[0] = new TSStreamReader(s[0]);
fread[1] = new TSStreamReader(s[1]);
fwrite[0] = new StreamWriter(new FileStream(s[2], FileMode.Create, FileAccess.Write, FileShare.ReadWrite));
fwrite[1] = new StreamWriter(new FileStream(s[3], FileMode.Create, FileAccess.Write, FileShare.ReadWrite));
Console.WriteLine("fw0 = {0}", s[2]);
Console.WriteLine("fw1 = {0}", s[3]);
while ((!fread[0].EOF()) && (!fread[1].EOF()))
{
cuid = min(fread[0].LookAhead().m_nThiSinhID, fread[1].LookAhead().m_nThiSinhID);
while ((cuid <= fread[0].LookAhead().m_nThiSinhID) &&
(cuid <= fread[1].LookAhead().m_nThiSinhID) && (!fread[0].EOF()) && (!fread[1].EOF()))
{
if (fread[0].LookAhead().m_nThiSinhID <= fread[1].LookAhead().m_nThiSinhID)
{
cuid = fread[0].LookAhead().m_nThiSinhID;
fwrite[k].WriteLine(fread[0].DisposeCurrentTS().ToString());
}
else
{
cuid = fread[1].LookAhead().m_nThiSinhID;
fwrite[k].WriteLine(fread[1].DisposeCurrentTS().ToString());
}
}
while ((cuid <= fread[0].LookAhead().m_nThiSinhID) && (!fread[0].EOF()))
{
cuid = fread[0].LookAhead().m_nThiSinhID;
fwrite[k].WriteLine(fread[0].DisposeCurrentTS().ToString());
}
while ((cuid <= fread[1].LookAhead().m_nThiSinhID) && (!fread[1].EOF()))
{
cuid = fread[1].LookAhead().m_nThiSinhID;
fwrite[k].WriteLine(fread[1].DisposeCurrentTS().ToString());
}
numrun++;
k++;
if (k >= numfile)
{
k -= numfile;
}
} //while ((!fread[0].EOF()) && (!fread[1].EOF()))
// Chep 1 run chua tron
//{ }
if (!fread[0].EOF())
{
while (!fread[0].EOF())
{
cuid = fread[0].LookAhead().m_nThiSinhID;
fwrite[k].WriteLine(fread[0].DisposeCurrentTS().ToString());
}
numrun++;
k++;
if (k >= numfile)
{
k -= numfile;
}
}
if (!fread[1].EOF())
{
while (!fread[1].EOF())
{
cuid = fread[1].LookAhead().m_nThiSinhID;
fwrite[k].WriteLine(fread[1].DisposeCurrentTS().ToString());
}
numrun++;
k++;
if (k >= numfile)
{
k -= numfile;
}
}
fread[0].Close();
fread[1].Close();
fwrite[0].Close();
fwrite[1].Close();
Console.WriteLine("Num run = {0}", numrun);
}while (numrun > 1);
Console.WriteLine("Tap tin ket qua {0}", (k == 1)?s[2]:s[3]);
return(numrun);
}
